Hood with Air Supply HPPD

A Hood with Air Supply HPPD is a specialised ventilation solution for professional kitchens, combining extraction and air supply functions in a single unit. The integrated supply system solves the ventilation balance problem — the volume of extracted air is compensated directly within the hood’s construction, preventing negative pressure in the kitchen. This solution is particularly valuable in modern hermetic kitchens with improved energy-efficiency envelopes.

The importance of ventilation balance

In a professional kitchen, ventilation balance is a critical factor for proper air quality and equipment efficiency. If the volume of extracted air exceeds the volume of supplied air, negative pressure occurs, causing drafts, difficult door opening and smoke spreading outside the extraction zone. The HPPD model prevents this problem by ensuring precise ventilation balance. Professional kitchen ventilation requirements include the need for adequate air supply.

HPPD compared with a separate air supply unit

Traditionally, ventilation systems install the extraction hood and air supply unit as two separate systems. The HPPD model integrates both solutions into a single unit, simplifying both installation and daily operation. A separate air supply unit requires additional space, separate ductwork and electrical connections. The HPPD solution reduces overall installation complexity and costs.

Suitability for different kitchen configurations

HPPD hoods are suitable for wall mounting above cooking equipment and are an effective solution for kitchens where a separate air supply unit is not possible due to space constraints or construction complexity. Smaller kitchens with limited ceiling space can achieve full ventilation with the HPPD model. It is important to correctly calculate the hood’s capacity according to the cooking equipment’s output.

Grease filters and cleaning

Professional extraction hoods with air supply are equipped with grease filters that capture grease aerosols before they enter the ventilation system. Grease accumulation in ventilation ducts is both a hygiene and fire safety issue. Regular filter cleaning or replacement is a mandatory maintenance element that ensures stable extraction efficiency. Cleaning the HPPD filter system is simple and usually performed in the kitchen without special tools.

Noise level and comfort

For professional kitchen ventilation equipment, noise level is an important operational parameter, especially in open kitchens or restaurants with a view of the kitchen from the dining area. Quality HPPD hoods are designed with noise reduction solutions. Occupational safety regulations set the maximum permissible noise level in the workplace, and the extraction hood’s noise level must be considered in the overall kitchen noise assessment.

Energy consumption and efficiency

This reduces the need for higher extraction capacity to compensate for insufficient supply. The control system allows adjusting airflow according to actual load, reducing energy consumption outside peak hours.

Regulatory requirements

Building and HoReCa establishment requirements set mandatory ventilation standards for professional kitchens. Ensuring ventilation balance and appropriate air exchange rate is a mandatory condition for sanitary inspection approval. HPPD hoods with integrated air supply facilitate compliance with these requirements. BHS helps kitchens select the appropriate hood model with the required capacity.

Installation and connections

Installing an HPPD hood involves wall mounting, connecting the extraction duct and linking the supply air inlet. Electrical connections must be performed by a certified electrician according to the manufacturer’s specifications. The extraction duct’s diameter and length must match the hood’s capacity for proper efficiency.

Filter system and regular maintenance

HPPD hood grease filters must be removed and cleaned regularly — usually at least once a week during intensive use. Clean filters ensure optimal airflow and stable extraction efficiency. Clogged filters reduce extraction capacity and increase energy consumption. The grease collection tray must be emptied before it fills to prevent grease spillage inside the hood. BHS helps select models with easily maintainable filter systems.

Noise level and working environment

In professional kitchen ventilation equipment, noise level is an important parameter for employee comfort. Occupational safety regulations set the maximum permissible noise level in the workplace. Quality HPPD hoods are designed with noise reduction solutions — optimised motor placement and aerodynamic surfaces. A properly selected hood model with appropriate capacity operates efficiently at a lower noise level than an oversized model at full capacity.

Requirements for different kitchen types

HPPD hoods are suitable for various kitchen configurations. Restaurant kitchens with extensive grilling and frying menus require higher extraction capacity than cooking kitchens. In fast-food establishments with intensive frying processes, an HPPD model with high extraction capacity and effective grease capture is a mandatory condition. It is important to calculate the HPPD hood’s capacity according to the total cooking equipment output.

Frequently asked questions

How is the supply air temperature regulated in an HPPD unit?

Depending on the model specifications — some models include an air temperature regulation option. BHS advises on HPPD models.

Is an HPPD hood suitable for renovating an existing kitchen?

Yes — the integrated air supply simplifies installation in existing spaces and reduces installation costs. BHS helps assess suitability.

Why choose BHS?

BHS – Baltic HoReCa Solutions supplies professional equipment for restaurants, cafés, hotels and canteens: more than 20,000 products from many manufacturers. Our specialists help you choose the right equipment and spare parts for your kitchen or bar.

Delivery

We deliver across the European Union. Delivery time and cost depend on the order volume and destination — contact the BHS team for an exact price and lead time.